I do know that it is a wrong way. But there is no hope to set our server right. So I ask for a hack.

Our server uses byte strings to represent information internally. They are either UTF-8 or windows-1251.

When writing byte strings to a file (opened without using ":encoding(...)" and so using ISO-8859-1) it sometimes gives "Wide character in print" warning. I was assigned the task to eliminate this warning.

My question: Which encoding can I use instead of default ISO-8859-1 to eliminate the warning? In other words, I ask you to suggest me an encoding which uses all 256 codepoints, in order not to produce a warning on any particular codepoint.